Environmental problems
Across
- 2. result for hydro energy
- 5. layer is a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light. "Ozone holes" are popular names for areas of damage to the ozone layer.
- 6. primary greenhouse gases in Earth's atmosphere are water vapor (H. 2O), carbon dioxide (CO. 2), methane (CH. 4), nitrous oxide (N. 2O), and ozone (O3).
- 8. power is the conversion of energy from sunlight into electricity, either directly using
- 10. is the process of converting waste materials into new materials and objects. The recyclability of a material depends on its ability to reacquire the ...
- 11. is the permanent removal of trees to make room for something besides forest. This can include clearing the land for agriculture or grazing, or using the timber for fuel, construction or manufacturing. Forests cover more than 30% of the Earth's land surface, according to the World Wildlife Fund.
- 12. emission refers to an engine, motor, process, or other energy source, that emits no waste products that pollute the environment or disrupt the climate.
Down
- 1. is organic matter that has been decomposed in a process called composting.
- 3. energy is heat derived within the sub-surface of the earth. Water and/or steam carry the geothermal energy to the Earth's surface. Depending on its characteristics, geothermal energy can be used for heating and cooling purposes or be harnessed to generate clean electricity.
- 4. energy, also called hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity. People have used this force for millennia.
- 7. combines at least one electric motor with a gasoline engine to move the car, and its system recaptures energy via ...
- 9. energy is a broader category encompassing all non-fossil-fuel-based